water movement at surface

[crankbait09]

then there is no reason to remove teeth?

[vashawn]

Originally Posted by mcgyvr

I just wanted it to be clear that the flow rate did NOT change at all.
The same amount of water is still circulating in the tank at the same rate it was before....

If you had 451GPH before you still have 451GPH of water flowing after busting out the teeth..

correct sir!
Im not talking about about flow rate over all in the tank
more water is being pulled into the OF by removing the teeth (no restriction, the teeth does cause it) using the same pumps running at the same speed.

[mcgyvr]

Originally Posted by crankbait09

then there is no reason to remove teeth?

I did not say that..

The total flow rate is not changing.. BUT the flow is now composed of more water directly from the surface..

But I suspect the juice won't be worth the squeeze with corner overflows (assuming thats what you have)..
Will it help.. yes.. some.. Will it eliminate the problem.. Doubt it..

Aiming a powerhead is probably the best hope you have.. And by your own admission this didn't start (or you didn't notice) until you moved powerhead flows around..

[crankbait09]

well tonight i got home and started thinking about the hobby plastic canvas that i have in my overflows to keep the fish from jumping into it when spooked. I decided to remove it and within about 30 seconds, the film that was on the surface disappeared.

So I think the canvas was restricting flow...obviously.

i may get a couple more smaller powerheads to add more flow, but the film is gone